Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Will Cat Poop Kill My Plants? Vet-Verified Risks, Prevention & FAQ

himalayan cat in the garden

A common challenge that many cat owners will inevitably deal with is the smell of kitty droppings. Cat feces have a foul smell, which can easily disrupt the air quality in your home. So, having your cat do their business outside can save you the trouble of cleaning and dealing with the not-so-aromatic fragrance of cat excrement.

While more convenient, you may think that your cat pooping on your plants outside is the better choice, but can cat poop hurt your plants? Yes, cat poop can be harmful to your plants if it is not properly composted or aged.

Are you curious how cat poop can damage your plants? Read on to find out more!

divider 3 paws

What Makes Cat Poop Dangerous?

Aside from the unpleasant smell, fresh cat excrement is potentially dangerous because it can affect the chemistry of your soil and pose health risks.

Soil Chemistry

Cat poop is essentially similar to cattle poop in the sense that it contains nitrogen, phosphate, and potassium. The elements found in excrement are the primary ingredients in organic fertilizer. The reason why fresh cat feces can harm your plants is the amount of nitrogen present. Cat feces contain nearly twice as much nitrogen as cattle feces, which can burn and damage plants if added to soil.

Aside from the high levels of nitrogen, fresh cat feces may also contain harmful bacteria, pathogens, and parasites that can potentially contaminate and damage your plants.

Health Risks

Aside from the potential harm that your cat’s poop can cause to your plants, leaving it in the garden can also pose several health risks. Humans can be at risk of diseases, such as Toxoplasmosis, Salmonella, E. coli, and roundworms, if the excrement is not disposed of properly and left to decompose in the soil.

Toxoplasmosis is caused by the Toxoplasma gondii parasite, which is transmitted through cat feces. While most infected may not experience symptoms, pregnant women pose the highest risk, as toxoplasmosis can cause birth defects.

Another parasite that can be passed to humans through feces is roundworms, which can also cause serious illness. Salmonella and E. coli are two types of bacteria that can be transmitted through cat feces. Both bacteria can cause gastrointestinal infections and fever.

divider 3 paws

Cleaning Your Cat’s Poop

Because of the potential harm to your plants and your health, it is crucial to clean up your cat’s waste. To prevent contamination, wear thick rubber gloves and a dust mask when cleaning your cat’s feces. With a shovel, remove the poop along with any surrounding soil or produce that has come into contact with it. To ensure that you removed everything, try to dig the soil up to 2 inches deep from where the cat feces rested.

With cat urine, you don’t have to worry about any harmful effects on the soil, plants, or humans unless the urine is in high concentration. However, it is still recommended that you rinse off the urine on plants or the soil with water to remove the smell and prevent any further damage to your plants.

Garden shovel
Image Credit: Lipskiy, Shutterstock

Preventing Your Cat From Pooping on Your Plants

Whether it’s vegetable beds or potted plants, a few tricks are available to keep your cat from using them as litter boxes. Of course, the best way to train your cat to avoid going potty on soil is by training them to use the litter box in the first place. Cats may be curious and love to explore, but they are also creatures of habit. If they develop the habit of using the litter box, they typically won’t do it anywhere else.

If entirely unavoidable, especially in an area with stray cats, you may have to use repellents. Chicken wire can keep cats away from your garden or potted plants by acting as a cage. Another method that utilizes barriers includes using large stones to cover soil. This is preferred for potted plants rather than gardens or vegetable beds because of the number of stones needed to cover the soil. The use of stones makes the surface smooth and hard, which is unattractive compared to the soft texture of soil.

Aside from the barriers, motion-activated devices are convenient for keeping your cat from going near plants and other areas. They produce a noise when motion is detected, which can effectively deter cats from going closer. Using motion-detected water sprinklers in gardens and vegetable beds is also a great way to keep cats from getting too close. Using safe substances with overwhelming scents, such as apple cider vinegar, can repel cats as well.

Cat Poop as Compost and Fertilizer

If you’re wondering if cat poop is good fertilizer, it can be if it is properly composted. Composting is a natural process that breaks down feces and kills off harmful bacteria and parasites. Composting cat feces and other materials should be done away from organic matter to prevent contamination. To avoid over-fertilization, it’s best to dilute cat poop compost with other types of compost or organic matter.

Before using cat poop as fertilizer, ensure that the compost has fully decomposed. Cat poop compost should only be used on non-edible plants, such as flowers, trees, or shrubs. Compost with cat feces can still pose health risks even though properly decomposed and composted, so it’s best to avoid using it on fruit or vegetable plants.

When removing cat poop, remember to wear gloves and wash your hands to reduce the risk of bacterial or parasitic infections.

divider 1 paws

Final Thoughts

Your house may smell much better if your cat poops out in the garden, but it can be harmful to plants and humans. Should your cat end up pooping on your plants, be sure to properly clean it with gloves and a shovel to prevent plant damage and health complications.

There are safe ways to keep your cat from going potty around your plants with the use of barriers or repellents, but using litter boxes is still the best and preferred way of dealing with your cat’s waste!

See also:


Featured Image Credit: BrittanyNY, Shutterstock

How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Can You Compost Cat Hair & Fur? Interesting Facts & Tips

Composting is a wonderful way to turn garbage and waste into fertilizer for your plants and soil. Plenty of items can go into...

cat and its fur

Can You Compost Cat Litter? Vet Approved Facts & Tips

Americans recycle or compost nearly one-third of the 292.4 million tons of municipal solid waste (MSW) they generate annually. It takes effort, but...

Cleaning cat litter box

What Does Feral Cat Poop Look Like? Fecal Identification Guide

Feral cats are those that have had minimal to no human contact and thrive in the wild. As a result, their poop may...

feral cat surrounded with fallen leaves

6 Health Risks of Keeping a Dirty Litter Box: Vet-Approved Sickness Signs

Cleaning the litter box is one of the most laborious (not to mention smelly) tasks a cat owner must do every day, so...

woman cleaning cat litter

More related

two-cats-looking-at-the-litter-box

Do Cats Eat Their Own Poop? Vet-Verified Facts & How to Stop It

Cats are curious creatures, and we may see them sampling various non-edible things, including houseplants, cardboard boxes, and our toes. Many animals eat...

hand holding shedded cat hair

7 Creative, Crafty Uses for Cat Hair (With Pictures)

While hair floating around the house can be the bane of many cat parents’ lives, those fluffy bundles can be more useful than...

vocal semi-feral cat

How Bad Is Hawaii’s Feral Cat Problem? The Facts

Hawaii has a serious feral cat problem. The numbers vary, but it’s safe to say that there are more feral cats on the...

cat in the garden

How to Keep Cats Out of Your Yard & Garden: 9 Vet-Approved Methods

While all cats are adorable, fun, and frisky, they can also be destructive, and strays can sometimes carry diseases. If you have a...

Keep reading

Will Insulation Hurt My Cat If They Touch It? Vet-Reviewed Prevention Tips & Safety Info

Most (but not all) wall or hardware insulation isn’t going to harm your feline if they only touch it. However, it isn’t digestible, so if your feline eats it, it can cause chemical toxicities and/or gastrointestinal blockage. Such incidents are...

Foam construction insulation

Is Lysol Toxic To Cats? Ver Reviewed Concerns & Safety Tips

When you adopt a pet, you will probably find yourself cleaning more often. However, many of the cleaners that we use are filled with harsh chemicals. They get the job done in the fight against germs, but they also have...

Cat-with-cleaning-equipment_absolutiamges_shutterstock

How to Stop Your Cat Begging for Food: 6 Ways That Work

Shadow was a young adult cat when she was rescued by her human, Nikki, from a trailer park where stray and feral cats gathered. Since kittenhood, Shadow lived in the park, scrounging for scraps from dumpsters and begging residents for...

What Do Cats Do All Day? 7 Usual Things

Pet cameras may be all the rage these days, but unless you have one in every room, you won’t constantly have eyes on your cat. This is especially true if your cat spends all or part of the day outside....

persian cat lying on couch

Can Cats Eat Nutritional Yeast? Vet-Reviewed Facts & FAQ

Nutritional yeast is usually healthy for cats in moderation. Unlike baking yeast—which is highly dangerous to felines—nutritional yeast is deactivated yeast, which means it won’t ferment and rise in your cat’s stomach. Nutritional yeast is healthy in and of itself...

Can Cats Eat Nutritional Yeast

Is Kibble Bad for My Cat? Vet Reviewed Facts & FAQ

Cats are family members, and they deserve the best possible care, including the most nutritious diet possible. But there’s tons of information online with varying suggestions regarding feline nutrition. Some articles state that kibble is bad for cats. Others suggest...

kibble-pixabay

Are Lightning Bugs Poisonous to Cats? Vet-Reviewed Facts & FAQ

Lightning bugs, or fireflies (family Lampyridae), can be fun to watch and relatively easy to find on a summer evening. Your cat also might like chasing them around. However, if your cat ate one when you weren’t looking, you might...

Lightning Bugs

How Do Cats Drink Water? Vet-Approved Facts

Have you ever watched a cat drink water before? It’s not something many people think too much about, but it’s truly an amazing feat of physics that requires perfect timing and balancing inertia with gravity. Sounds unbelievable? Keep reading to...

cat drinking from cat water fountain